Antenna and methods of use for an implantable nerve stimulator
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61N-001/08
A61N-001/372
A61N-001/36
A61N-001/378
H04B-001/40
H04W-072/04
출원번호
US-0993009
(2016-01-11)
등록번호
US-9700731
(2017-07-11)
발명자
/ 주소
Nassif, Rabih
Hasbini, Hisham
출원인 / 주소
AXONICS MODULATION TECHNOLOGIES, INC.
대리인 / 주소
Kilpatrick Townsend & Stockton LLP
인용정보
피인용 횟수 :
0인용 특허 :
221
초록▼
A pulse generator that includes a communications module is disclosed herein. The communication module includes a transceiver and an antenna circuit. The antenna circuit includes a first pathway having a capacitor and a second, parallel pathway including a capacitor, and a resistor, and a radiating e
A pulse generator that includes a communications module is disclosed herein. The communication module includes a transceiver and an antenna circuit. The antenna circuit includes a first pathway having a capacitor and a second, parallel pathway including a capacitor, and a resistor, and a radiating element arranged in series. The antenna circuit is tuned to have a resonant frequency corresponding to a desired transmission frequency and a bandwidth corresponding to shifts in the resonant frequency arising from the implantation of the antenna circuit in a patient's body.
대표청구항▼
1. An implantable neurostimulator for delivering one or more electrical pulses to a target region within a patient's body according to a program received via wireless communication with an external device, the implantable neurostimulator comprising: a hermetic housing having an external surface comp
1. An implantable neurostimulator for delivering one or more electrical pulses to a target region within a patient's body according to a program received via wireless communication with an external device, the implantable neurostimulator comprising: a hermetic housing having an external surface comprising a biocompatible material that is configured to be implanted within a body of a patient;a transceiver disposed within the hermetic housing and comprising a first lead and a second lead; anda communication antenna circuit disposed within the hermetic housing and coupled to the first lead and the second lead, the antenna circuit having a first path and a second path parallel to the first path, the first path comprising a first capacitor, and the second path comprising: a second capacitor;a radiating element; anda resistor, wherein the second capacitor, the resistor, and the radiating element are arranged in series. 2. The implantable neurostimulator of claim 1, wherein the antenna circuit comprises a printed circuit board (PCB). 3. The implantable neurostimulator of claim 2, wherein the radiating element comprises a plurality of conductive loops on the PCB, and wherein the plurality of conductive loops are located along a common plane of the PCB. 4. The implantable neurostimulator of claim 3, wherein the conductive loops comprise copper traces embedded onto a substrate surface of the PCB, and wherein the copper traces are configured to produce an electric field dipole having a donut pattern with a maximum strength in the common plane such that a maximum field is substantially normal to a body surface of the patient when the housing is implanted for use. 5. The implantable neurostimulator of claim 4, wherein the plurality of conductive loops comprises a first loop and a second loop, wherein the second loop is located within the first loop. 6. The implantable neurostimulator of claim 5, wherein the antenna circuit has a fixed natural resonant frequency, the first capacitor has a first fixed capacitance and the second capacitor has a second fixed capacitance. 7. The implantable neurostimulator of claim 6, wherein the antenna circuit is defined by a Q factor and the resistor is configured to diminish the Q factor of the antenna circuit such that a bandwidth of the antenna circuits encompasses patient implantation-related variability in resonant frequency when the antenna circuit is implanted in the patient body and communicates with the external device. 8. The implantable neurostimulator of claim 1, wherein the housing comprises at least a ceramic case portion so as to provide an efficient radio frequency transparent window for wireless communication between the implantable neurostimulator and the external device, wherein the external device comprises a clinician programmer, patient remote, or a charging device. 9. An implantable neurostimulator for delivering one or more electrical pulses to a target region within a patient's body, the implantable neurostimulator comprising: an at least partially ceramic housing having an external surface that is configured to be implanted within a body of a patient;a radio frequency transceiver disposed within the partially ceramic housing and comprising a first lead and a second lead; andan antenna circuit disposed within the partially ceramic housing and configured to wirelessly communicate with an external device, the antenna circuit coupled to the first lead and the second lead and having a first path and a second path parallel to the first path, the first path comprising a first capacitor and the second path comprising a resonant tuned circuit comprising a second capacitor, a resistor, and a radiating element arranged in series, wherein the antenna circuit has a fixed resonant frequency. 10. The implantable neurostimulator of claim 9, wherein the antenna circuit comprises a printed circuit board (PCB). 11. The implantable neurostimulator of claim 10, wherein the radiating element comprises a plurality of conductive loops formed on the PCB, and wherein the plurality of conductive loops comprises a first loop, and a second loop, wherein the second loop is located within the first loop. 12. The implantable neurostimulator of claim 11, wherein the fixed resonant frequency corresponds to a transmitting frequency at which the implantable neurostimulator is configured to receive one or more wireless communications. 13. The implantable neurostimulator of claim 12, wherein the antenna circuit has a bandwidth, wherein the bandwidth of the antenna circuit is tuned such that an effectiveness of the antenna circuit at receiving the transmitting frequency does not drop below a half-power point of the antenna circuit when implanted within the body of the patient. 14. A method of wireless communication of data between an implantable neurostimulator and an external device, the method comprising: implanting the neurostimulator with a patient's body, the implantable neurostimulator comprising:a hermetic housing;a transceiver disposed within the hermetic housing and comprising a first lead and a second lead; andan antenna circuit disposed within the hermetic housing and coupleable to the first lead and the second lead, the antenna circuit having a first path and a second path parallel to the first path, the first path comprising a first capacitor, and the second path comprising:a second capacitor;a radiating element; anda resistor, wherein the second capacitor, the resistor, and the radiating element are arranged in series, and wherein the antenna circuit has a resonant frequency; andreceiving data wirelessly transmitted from the external device at the implantable neurostimulator, wherein the data is transmitted at a transmission frequency and is configured to control delivery of one or more electrical pulses to a target region within the patient's body. 15. The method of claim 14, wherein implanting the neurostimulator into the patient's body creates an effective resonant frequency of the antenna circuit, the effective resonant frequency differing from the resonant frequency in response to a tissue of the patient's body into which the neurostimulator is implanted. 16. The method of claim 15, wherein the one or more properties of a tissue of the patient's body comprise at least one of: a density, a hydration level, a resistance, an inductance, or a tissue type. 17. The method of claim 16, wherein the antenna circuit is tuned to have a bandwidth encompassing both the effective resonant frequency and the transmission frequency. 18. The method of claim 17, wherein the antenna circuit comprises a printed circuit board (PCB). 19. The method of claim 18, wherein the radiating element comprises a plurality of conductive loops formed on the PCB. 20. The method of claim 19, wherein the plurality of conductive loops comprises a first loop, and second loop, wherein the second loop is located within the first loop.
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이 특허에 인용된 특허 (221)
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